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α is a solid solution of C in BCC iron, called ( ). 参考答案:(1) ferrite 点击查看答案 单项选择题 以下不是主动吸气式感烟探测器特点的是( )。 A、灵敏度高 B、安装高度不受限制 C、分级预警 D、超早期探测 点击查看答案 点击查看答案
The topology of the lattice unit cell has a major influence on how the structure fails. Unit cells such as those shown in Fig. 1 are typically categorised as bending-dominated or stretching-dominated structures. Bending-dominated structures (such as BCC) are generally more favourable for energy...
Basal-cell carcinoma: BCC A female patient of age 84 had a BCC located on the cheek with a typical surface appearance and a hypoechoic heterogeneous structure measured to be 1 mm thick according to the VisualSonic ultrasound (Fujifilm vevo MD HF, Toronto, Canada)9. Histological examination conf...
Described as a solid reservoir or a "water tower," glaciers provide an important source of fresh water for global arid areas (Barnett et al., 2005; Chen et al., 2009; Immerzeel et al., 2010, 2019; Zhang et al., 2020). About 200 million people depend highly on glacier meltwater, ...
Chromium has BCC structure. Its atomic radius is 0.1249 nm. What does face-centered mean? : relating to or being a crystal space lattice in which each cubic unit cell has an atom at the center and at the corners of each face— compare body-centered. Why is the simple cubic structure so...
It has been demonstrated by neutron experiments that the local atomic distributions of solute elements in solid solutions are in a good consistence with those in their related ordered phase, which is closely related to the content of solute elements50,51,52. We have classified the alloying element...
The most promising candidate has bcc structure and is reminiscent of the blue phase of liquid crystals in that it has line nodes of magnetization protected by symmetry. We introduce a Landau theory to study the properties of these states, in particular, the effect of crystal anisotropy, magnetic...
Chromosomal recombinant gene expression offers a number of advantages over plasmid-based synthetic biology. However, the methods applied for bacterial genome engineering are still challenging and far from being standardized. Here, in an attempt to r
Furthermore, the group of noble-gas solids, like hexagonal-close-packed (hcp) and body-centered cubic (bcc) 3He, hcp 4He, face-centered cubic (fcc) Ne and Ar etc., can only keep in solid phase with crystalline structure at low temperatures or high pressures, the same as benzene ...